Parser has a wrong output for GPGGA in Western Hemisphere

[WuLyon]

For a GPGGA message in Western Hemisphere, the parser.py made a mistake.

For example：
$GPGGA, 100517. 60,4038.07917733, N, -839.59987224, E, 5, 20,1.40,2.592,M, 55.158,M, 2.4, 0051*56

parser.py would give a wrong longitude
{'GGA': {'fix_type': 5, 'latitude': 40.6346529555, 'latitude_direction': ' N', 'longitude': -7.3400021293333335, 'longitude_direction': ' E', 'altitude': 2.592, 'mean_sea_level': 55.158, 'hdop': 1.4, 'num_satellites': 20, 'utc_time': 1722387651}}